Historical Rules · 16 January 2016
Rule 715.5d
Official source text from the 16 January 2016 Rules release
At the end of a subgame of an Archenemy game, any face-up scheme cards in the subgame command zone are turned face down and put on the bottom of their owner’s scheme deck. Then the archenemy moves his or her scheme deck from the subgame command zone to the main-game command zone and shuffles it.